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evo oil pressure gauge reading low ?

Got an evo oil pressure gauge , it reads 17-18 psi at idle which is 1000rpm , seems kinda low , earlier in the day when it was idling it read 70psi . The oil pump might be 10,000 miles old at the most sat for one year , the oil pressure is brand new its a pro sport evo . Also I am running breaking oil . Either my oil pressure sending unit is deffective or my oil pump is shot , engine was just rebuilt with brand new bearings , rings etc . BTW the oil pressure does goes up it says 40psi at 2000rpm when cruising??

evo oil pressure gauge reading low ?

Prosport isn't known for their accuracy... I'd follow Alex's advice. But that kind of jump in pressure sounds like a faulty sending unit to me. Were both readings taken at the same oil temp? Straight 30wt oil will show a bigger jump in pressure when hot/cold.

Prosport isn't known for their accuracy... I'd follow Alex's advice. But that kind of jump in pressure sounds like a faulty sending unit to me. Were both readings taken at the same oil temp? Straight 30wt oil will show a bigger jump in pressure when hot/cold.

Yeah that's what I was thinking , its just that running a mechanical gauge with the hard line into the engine cabin is a pain in the ass lol . what brands are good gauge wise

Then test if you're reading the same as the gauge you have. If not, I'd say the sending unit is wack. I bought a cheapo autometer (50 bucks) and it's as accurate as my Matco tester. I wouldn't touch pro-sport anything even with a 10 ft pole. Just sayin...

Then test if you're reading the same as the gauge you have. If not, I'd say the sending unit is wack. I bought a cheapo autometer (50 bucks) and it's as accurate as my Matco tester. I wouldn't touch pro-sport anything even with a 10 ft pole. Just sayin...

Would being low on oil cause the oil pressure to be low ? Went to check oil, was hard to tell since oil is brand new and clear but I think it was on the lower end of the dipstick . I put 4 quarts and a half . I do have the bsr kit

Yes if the pickup is not submerged causing starvation but I don't think that is your situation. Like I said go get yhe pressure tested by a tester to really know if what the gauge says is accurate or not. Remember that pressure is regulated by what you have. Clearances on the bearings can cause higher or lower readings. Viscousity and temperature can do it too.

I have nothing against prosport. I just see them break more often than not. Plus autometers are made here iirc.

Im sitting half way on the stick which is about half quart low. I never notice a pressure difference so I would have to say no. There was someone one here who did a test and found there pro sport oil pressure gauge a couple psi on the low side. I have noticed that I have have lower presuure with 5w30 but I tend to run 5w40

I've only bought and installed one ProSport gauge, it was just inaccurate by a few psi. Interwebs searching showed that this is a common occurrence (at least their boost gauges). My mechanical Autometer was cheaper, responds faster, was made in the US, and cost less (although I don't have a way to compare accuracy).

Yes if the pickup is not submerged causing starvation but I don't think that is your situation. Like I said go get yhe pressure tested by a tester to really know if what the gauge says is accurate or not. Remember that pressure is regulated by what you have. Clearances on the bearings can cause higher or lower readings. Viscousity and temperature can do it too.

I have nothing against prosport. I just see them break more often than not. Plus autometers are made here iirc.

My engine is brand new , clearances should be good i assume , engine was built by the best engine builder in the area , was recommended by many, broken oil pump??? idk we ll see , ima top the oil off tomorrow and check for oil leaks, and will wiggle some wires on the pressure sender . I know on my boost prosport evo gauge sometimes it will show i am under boost, when i am just idling .....and sometimes it doesnt even read..wtf